Detection of Silver and Mercury Ions Using Naphthalimide-Based Fluorescent Probe.

ABSTRACT: A multifunctional fluorescent probe P based on a naphthalimide derivative for the detection of Ag⁺ and Hg²⁺ through a dual-signal was designed and characterized. P exhibited a large Stokes shift (107 nm), high selectivity, good sensitivity, and fast response time. By adjusting the testing medium and the order of reagent addition, multifunctional detection with P was achieved. The addition of Ag⁺ or Hg²⁺ to P solution in either ethanol or an ethanol-water mixture resulted in a significant quenching of fluorescence emission at 537 nm and caused a decrease in the absorbance at 440 nm accompanied by the appearance of a new absorption peak at around 340 nm, and there was an obvious color change from yellow to colorless. In contrast, the addition of ot

SUBMITTER: Yu C 

PROVIDER: S-EPMC11547768 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature